A triband slotted bow-tie wideband THz antenna design using graphene for wireless applications

A graphene based triband slotted bow-tie THz antenna is designed and simulatedover anultra wide-band (UWB) of frequencies for modem wireless communication systems. Nanomaterial such as graphene having a number of desirable electromagnetic and mechanical properties can play a significant role in a well defined shape of bow-tie antenna. The electromagnetic properties like S-11 parameters, VSWR, gain, realised gain, directivity, input impedance, axial ratio, radiated power, accepted power, efficiency and the radiation properties of such antenna are investigated through finite element method (FEM) based high frequency simulator software (HFSS) which is a commercially available electromagnetic simulator. By incorporating a new nanomaterial such as graphene for slotted bow-tie structure on silicon dioxide substrate with thickness of 3 mu m and permittivity of epsilon(r) = 4 is resonate in triband in THz region. The simulation results show that the radiation efficiency of this bow-tie is 71%, 18.194 dB directivity and 17.529 dB realized gain at 11.1 THz resonating frequency.